87164436864 has 32 divisors (see below), whose sum is σ = 231530536440. Its totient is φ = 29054812160.

The previous prime is 87164436859. The next prime is 87164436893. The reversal of 87164436864 is 46863446178.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113494977 + ... + 113495744.

Almost surely, 2^87164436864 is an apocalyptic number.

It is an amenable number.

87164436864 is an abundant number, since it is smaller than the sum of its proper divisors (144366099576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87164436864 is a wasteful number, since it uses less digits than its factorization.

87164436864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226990738 (or 226990726 counting only the distinct ones).

The product of its digits is 18579456, while the sum is 57.

The spelling of 87164436864 in words is "eighty-seven billion, one hundred sixty-four million, four hundred thirty-six thousand, eight hundred sixty-four".